.back_header {
    display: flex;
    height: 40px;
    border: 1px solid #ccc;
    background-color: #fff;
}

.back_icon {
    width: 40px;
    line-height: 38px;
    font-size: 34px;
}

.title {
    flex: 1;
    text-align: center;
    line-height: 40px;
}

.chat_content {
    height: 500px;
    padding: 20px 20px 0;
    overflow-y: scroll;
    background-color: #fff;
}

.chat_content_item {
    display: flex;
    flex-direction: column;
    height: 100px;
    margin-bottom: 20px;
    padding: 8px 10px 12px;
    border-radius: 10px;
    background-color: #fff;
}
.chat_content_item .header {
    display: flex;
    align-content: flex-end;
    height: 30px;
    margin-bottom: 8px;
}

.user_avatar {
    width: 30px;
    height: 30px;
    margin-right: 15px;
    border-radius: 50%;
    background-color: red;
}

.user_info {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.user_info .name {
    font-size: 12px;
    line-height: 12px;
    margin-bottom: 4px;
}

.user_info .time {
    color: #ccc;
    font-size: 12px;
    line-height: 10px;
    transform: scale(80%);
    transform-origin: left bottom;
}

.chat_content_item .content {
    padding: 0 40px;
}

.my_chat_content {
    border: 1px solid #e8e8e8;
    box-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
}

.other_chat_content {
    border: 1px solid #f8f8f8;
    box-shadow: 3px 3px 6px rgba(0, 0, 0, 0.05);
}
